JPWO2010122900A1 - Ladle transport cart - Google Patents

Abstract

Provided is a ladle transport cart that can minimize the decrease in molten metal temperature by using a ladle transport cart for transporting the ladle and opening and closing the lid as needed in each process. The lid is opened and closed by lifting and lowering the lid from the ladle and moving it on a horizontal plane. And a lid opening / closing device comprising: an arm driving means for moving the arm on a horizontal plane; and a mount on which the arm driving means is placed and installed on the ladle transport carriage. [Selection] Figure 3

Description

  The present invention relates to a ladle transport carriage for transporting a ladle in a molten metal transport line in a foundry.

  Conventionally, a casting factory receives hot molten metal from a melting furnace, transports it to a pouring station, and pours it into a mold at the pouring station to make a cast product. A ladle is used as a container for transporting the molten metal, and the ladle is transported by a transport carriage or a driving roller. In addition, a lid is used for the ladle to minimize the decrease in the temperature of the molten metal in the ladle. Further, a crane or the like is conventionally used as a means for transporting a ladle containing molten metal. As a ladle used for conveyance with a crane etc., there is what was indicated in patent documents 1.

    Patent Document 1: Japanese Patent Laid-Open No. 11-320078

  In the ladle described in Patent Document 1, a lid opening / closing mechanism is attached to the ladle body, and the lid is automatically opened and closed by ground cutting of the ladle. Therefore, in order to further reduce the decrease in the molten metal temperature, in order to perform the pouring operation by setting the ladle containing the molten metal and receiving the molten metal as it is in the pouring machine, the ladle as described in Patent Document 1 is used. When a lid opening / closing mechanism is attached to the main body, it is difficult to automatically open and close the lid on the pouring machine.

  Further, if a lid is not used for the ladle, the temperature of the molten metal may be lowered during transportation, and casting defects may not be increased or pouring may not be possible. In addition, there are processes such as removing the paste, spheroidizing graphite and inoculating from the hot water receiving station to the pouring station, and it is necessary to frequently open and close the lid each time. Installation of a lid opening / closing device for each process has a problem in that the equipment cost increases and the installation space increases.

  Then, an object of this invention is to provide the ladle conveyance trolley which can use the ladle conveyance trolley for conveyance of a ladle, and can reduce the fall of molten metal temperature as much as possible in view of the above situation.

  In order to solve the above-described problem, the ladle transport cart of the present invention includes a lid opening / closing device that opens and closes the lid by moving the lid up and down.

  The lid opening / closing device includes a lid lifting / lowering means for lifting / lowering the lid from the ladle, an arm to which the lid lifting / lowering means is attached, and an arm driving means to which one end of the arm is attached and moves the arm on a horizontal plane. The arm driving means is placed on the ladle conveying carriage, and a gantry is provided.

  Furthermore, the arm driving means of the lid raising / lowering means moves the lid from above the pan by rotating the lid raising / lowering means.

  The lid lifting / lowering means includes a gripping means for gripping the lid of the ladle and a lifting / lowering means for lifting and lowering the gripping means.

  Furthermore, the ladle with the lid is also used in a pouring process.

  Further, the ladle with the lid is also used in a graphite spheroidizing process.

  Furthermore, the ladle with the lid is also used in an inoculation process for inoculating molten metal in the ladle.

  In addition, the ladle with the lid is also used in a pouring process and a graphite spheroidizing process, or used in an inoculation process for inoculating a pouring process and a molten metal in the ladle.

  In the present invention, the ladle lid opening and closing mechanism is installed separately from the ladle, and the ladle transport carriage is equipped with a ladle lid opening and closing device. As soon as you can close the lid. Therefore, the lid can be opened and closed as necessary in each step such as the pouring step, the graphite spheroidizing step and the inoculation step, so that the temperature drop of the molten metal can be reduced and the occurrence of casting defects can be reduced. Furthermore, it is possible to reduce the waste of melting power, such as remelting, due to the fact that the temperature cannot be poured excessively. Moreover, when the ladle with the lid is used in the pouring step, it is possible to further prevent the molten metal temperature from decreasing. Furthermore, there is no need to install a lid opening / closing device for each process such as cutting, pouring, graphite spheroidization, and inoculation, and the cost and installation space can be saved.

It is the schematic of the molten metal conveyance line using the ladle conveyance truck of this invention. It is a plane schematic diagram of the ladle conveyance cart of the present invention. FIG. 3 is a schematic front view of FIG. 2 showing a state when a lid is closed. It is a plane schematic diagram when carrying out opening operation of the lid of the ladle conveyance cart of the present invention. It is a front schematic diagram when carrying out opening operation of the lid of the ladle conveyance truck of the present invention.

Hereinafter, modes for carrying out the present invention will be described.
As shown in FIG. 1, the ladle transport cart 1 receives hot water in a melting facility 3 having a melting furnace for melting materials such as iron or a holding furnace for holding the molten metal, and casts the molten metal into a mold. It arrange | positions so that it may drive | work on the track | orbit 5 installed along the melt | dissolution equipment 3 and the pouring equipment 4 so that the ladle received to the hot water equipment 4 can be conveyed.

  As shown in FIG.2 and FIG.3, the ladle conveyance trolley | bogie 1 is comprised by the trolley | bogie 1a, the wheel 1b, and the wheel drive means 1c. A roller conveyor 6 comprising a plurality of rollers 6a and a roller driving device 6b for rotating the rollers 6a forward and backward is disposed on the carriage 1a. Further, a stopper 6 c is installed at one end of the roller conveyor 6 so that the ladle A does not deviate from the roller conveyor 6. A ladle A is supported on the roller conveyor 6, and a lid B is set on the ladle A.

  In the lid opening / closing device 2, a rotary bearing 2b and a rotary shaft driving means 2c are fixed on a mount 2a fixed on the carriage 1a, and an arm 2e is fixed to the rotary shaft 2d supported by the rotary bearing 2b. A lid lifting / lowering means 7 is attached to the tip of the arm 2e opposite to the rotating shaft 2d. The rotating shaft driving means 2c and the rotating shaft 2d transmit power through a sprocket and a chain.

  The lid lifting / lowering means 7 includes a gripping means 7a for gripping a T-shaped lid gripping member 8 mounted on the top plate of the lid B, and an actuator 7b for lifting and lowering the gripping means 7a. The actuator 7b may be anything that can be moved up and down, such as a hydraulic or pneumatic cylinder or motor. The gripping means 7a has a hook-shaped gripping member 7c for gripping the lid gripping member 8, and when the gripping member 7c reaches the lower end by the lid lifting / lowering means 7, the arm 2e is swung when the arm 2e is turned. A space is provided so that the member 8 and the gripping member 7c do not contact each other.

  Hereinafter, operation | movement of the ladle conveyance trolley 1 comprised as mentioned above is demonstrated. As shown in FIG. 1 to FIG. 3, when the ladle A that has been emptied by transporting the molten metal to the pouring equipment 4 receives a hot water receiving command from the control device of the line, it operates the lid opening / closing device 2. Then, the lid B is opened to the melting facility 3 while the lid B is opened.

  As shown in FIGS. 4 and 5, in the opening operation of the lid B, the gripping means 7a of the lid elevating means 7 is lowered to the lower end by operating the actuator 7b. Next, the arm 2e of the lid opening / closing device 2 is swung on the lid B placed on the ladle A by the rotary shaft driving means 2c, and the T-shape of the lid gripping member 8 and the gripping member 7c. Move to a position where it engages with the key shape.

  Next, the actuator 7b is operated to raise the gripping member 7c. At that time, the hook shape of the gripping member 7 c comes into contact with the bottom surface of the T-shaped top plate of the lid gripping member 8, and the lid B is lifted through the lid gripping member 8 as the gripping member 7 c rises. Thereafter, the rotary shaft driving means 2c is operated to pivot the arm 2e in a direction to retract from the pan A, and the lid B is moved from the pan A.

  The ladle A that has finished opening the lid B and is transported to the melting facility 3 receives the molten metal at the melting facility 3 and immediately opens and closes the lid so that the temperature of the molten metal in the ladle A does not decrease. 2 closes the lid B.

  The closing operation of the lid B performs the reverse process of the opening operation. First, the arm 2e of the lid opening / closing device 2 holding the lid B is turned on the ladle A by the rotating shaft driving means 2c. Next, the actuator 7b is operated to lower the gripping member 7c to the lower end. At this time, it is confirmed whether the lid B covers the upper surface opening of the ladle A. Thereafter, it is confirmed whether the hook shape of the gripping member 7c is not in contact with the lower surface of the T-shaped top plate of the lid gripping member 8, and the rotary shaft driving means 2c is operated to remove the arm 2e from above the pan A. It is swung in the retracting direction and moved from the ladle A.

  Next, the ladle transport carriage 1 is loaded with the ladle A and moves to a ladle removal position (not shown). After stopping at the slot removing position, the lid opening / closing device 2 opens the lid B, and after performing predetermined operations such as slotting and temperature measurement, the lid B is closed again, and then the pouring equipment 4 Move up. When the pouring facility 4 stops, the capped ladle B is fed into the pouring facility 4 by the roller conveyor 6 on the carriage. Next, the ladle transport carriage 1 separately receives an empty ladle A and transports it to the melting facility 3. The empty ladle A is set with the lid B closed, and when a hot water receiving instruction is issued, the lid B is opened and the melting facility 3 is moved to perform the hot water receiving operation.

  In the present embodiment, the opening / closing operation of the lid B is a turning operation using the rotary shaft driving means 2c. However, the opening / closing operation of the lid B is not limited to this method, and is performed by a transverse movement using a slider, a cylinder or a link. It may be a thing.

  Further, in FIG. 1 of the present embodiment, the pouring position is provided on the same side as the melting equipment 3 of the track 5 on which the ladle transport carriage 1 travels, but the track 5 is provided on the opposite side of the scissors. May be.

  Furthermore, the ladle A with the lid is also used when a graphite spheroidizing process or an inoculation step is required.

  In addition, a dust collecting device or a dust collecting hood for collecting gas or the like generated from the molten metal in the ladle A when the lid B is open can be installed on the ladle transport carriage. The dust collector performs dust collection by connecting to the upper surface of the lid B or by connecting to a dust collecting hood (not shown) installed separately from the lid B. The dust collection hood moves to the upper surface of the ladle A when the lid B is opened to collect dust.

DESCRIPTION OF SYMBOLS 1 Ladle conveyance trolley 1a Carriage 2 Lid opening / closing device 2a Mounting frame 2b Rotating bearing 2c Rotating shaft drive means 2d Rotating shaft 2e Arm 3 Melting equipment 4 Pouring equipment 6 Roller conveyor 7 Lid raising / lowering means 7a Gripping means 7b Actuator 7c Gripping member 8 Lid Gripping member A Ladle B Lid

Claims (9)

  A ladle transport cart that carries a ladle with a lid and conveys the ladle, and includes a lid opening and closing device that opens and closes the lid by moving the lid up and down on a horizontal plane. The lid opening / closing device includes lid raising / lowering means for raising and lowering the lid from the ladle;
An arm to which the lid lifting means is attached;
One end of the arm is attached, and arm driving means for moving the arm on a horizontal plane;
2. The ladle transport carriage according to claim 1, further comprising a mount placed on the ladle transport carriage on which the arm driving means is mounted.   The ladle transport carriage according to claim 2, wherein the arm driving means of the lid lifting / lowering means moves the lid from above the ladle by rotating the lid lifting / lowering means.   The ladle transport carriage according to claim 2, wherein the lid lifting means includes a gripping means for gripping the lid of the ladle and a lifting means for lifting and lowering the gripping means.   The ladle transport cart according to claim 1 or 2, wherein the ladle with the lid is also used in a pouring process.   The ladle carrier cart according to claim 1 or 2, wherein the ladle with the lid is also used in a graphite spheroidizing process.   The ladle transport carriage according to claim 1 or 2, wherein the ladle with the lid is also used in an inoculation process for inoculating molten metal in the ladle.   The ladle transport cart according to any one of claims 1 to 4, wherein the ladle with the lid is also used in a pouring process and a graphite spheroidizing process.   The ladle transport carriage according to any one of claims 1 to 4, wherein the ladle with a lid is also used in a pouring step and an inoculation step for inoculating molten metal in the ladle.

Images